Air-compressor.



W T V m I 51mm, ,JZQHEQ I E. VER PLANOK.

AIR COMPRESSOR,

APPLICATION FILED FEB.20,1913,

1,080,737. Patented Dec.9,1913;

7 r 911/ //I 'y Witnesses: Inventor-z William ELVer-PlancK,

Hi o lttorne q W. E. VER PLANCK.

AIR COMPRESSOR.

ABPLIGATION FILED FBB.20,1913.

} ma ma Patented Dec.9,1913.

Ml x 4 2SHEET$-SHEET2.

Fig.2..

Inventor: WjHim E.VerPlancK HisoIttbr-neg.

Witnes sea:

"WILLIAM EVERETT IER PLANCK, OF ERIE, PENNSYLVANIA, AJ'SSIGNt S'Et ELECTRIC COMIE'ANY, CGRPOHATION NEW" r it AKE-CUD'IPE.

ilflfi llfiiil.

' Application filed February To all whom it may concern:

"S T" Be it known that l, lw naaimr lb. Vina Finance, a citizen of the United States, residing at Erie, 1n the county oi Eric, State of Pennsylvania, have invented certain new and useful Improvements in Air-Compressors, oi which the following is a specifica- To th e tion.

The present invention relates to air compressors and has for its object to improve and simplify their construction.

My improved compressor is 01 special value for use with internal combustion engines of the high compression type and will he described in this connection. Whenso used it. supplies low pressure air for-scavenging purposes and high pressure air for injecting fuel into the cylinder.

For a consideration of What I believe to be novel and my invention attention is di rected to the following description and claims appended thereto.

In the drawings which illustrate one of the embodinients of my invention, Figure 1 is a view in vertical section of my compressor Fig. 2 is an enlarged sectional view of theiupper part of the compressor and the cool ng means therefor, and Fig. is a plan viev't of the same.

4: indicates the base otthe compressor which may be of any suitable configuration. It niaiy' with advantage be a part of the on gine llrame as shown. Supported by suitable lit-airings therein is the crank. shaft 5. rank 6 is attached a connecting rod i r end of which is connected by a tubular member 8 forming a part ging pump piston 9. The menu- ,v in its vertical movements by .I :vhich has a head 11 formed th that hasa thickened pe- 7, the 1 7 pin to ti; of-thc so her 8 is the sleeve. integral the;

.t 1 rinhcral ortionhn' rm l2 that rests on and l P l is supported by formed on the base. main portion of the sleev :jze stitlening ribs 10. A second shoulder lightly above the first is provided on thd base and seated thereon is the scavenging pump cjj'linder or liner 15, said cylinder orjliner being relatively thin and of substantiallyl uniform cross-section to avoid weight and ircmovinternal shoulder 13 ween the ring and able from above. In the cylinder are seg -t mental ports 16 and 17 through which air is admitted to the cylinder and after compression is delivered thereby to the low pres- Speciiication of Letters ,v a .T 1% 1. a 1 an a tie-Sill MEG it w, a u law.

26, 1913. Serial. 7119,5509.

sure receiver 18, the latter supplying air to the working cylinders of the engine for scavenging purposes. The receiver is tori'ned partially by integral walls of the base and partially by the cylinder 15, the upper and lower ends of which cylinder are seated pressure tight. its a general thing the working cylinders of the engine will be supported directly by the receiver and in line with the compressor so as to simplify the apparatus and so that the working pistons thereof can be directly connected to the crank shaft 5.

Situated at one side of the pump cylinder '11 any suitable or convenient place is a balanccd piston valve 19 for controlling mg engagement with the walls of the annular openings in the partitions 22 and 23.

Air is admitted to the interior of the piston valve through a screen 24- of any suitable construction. The valve is actuated by a link 25, lever 26 and eccentric 27 on the main shaft. The parts should be so timed and related thatfree air is admitted on one side of the piston 9 while it is being compressed on the other, the compressed air being delivered at the proper time to the receiver l8.

Situated above the base is a ring 28 that has'a downwardly extending projection 29 which engages the top of the cylinder 15 and holds it in place. It also has an outwardly extending flange 30 that rests on the top of the base and supported thereby. To the projection 29 is connected a head 31 which not only forms the upper head for the scavenging pump but also supports the low and high pnessure cylinders of the compressor. The head is shaped to conform as closely as possible to the shape of the upper side of the piston 9 to reduce the cylinder clearance at this point. The lower head 11 is also shaped to conform to the shape of the under side of the piston and for the same reason.

Supported by the head 31 is the low pres sure cylinder and abov that the high pressure cylinder 33, Fig. 2, said cylinders being in tandem relation. The low pressure piston 34 is or may be formed integral with the scavenging pumppiston 9. In any purpose of permitting all (3f the pistons to be driven by the, same connecting rod'and causing the pist-ojn 34 to act as-a guide for the scavenging piston. Above the low-pressure piston is a high pressure piston rigidly connected to it and working .in'the high pressure cylinder 33. All of the pistons and cylinders are in this manner accurately alined. By making the ring 28, projection 29, head 30 and cylinders 32 and 33 in one casting the structure as a whole is greatly simplified, the machine work more easily and accurately performed, and the number of parts reduced. I,

Air to be compressed is admitted to the. low pressure cylinder by the conduit-35, Fig. 3, which leads from a suitable governor, such for example as that described in my pending application for Letters Patent, Serial No..747,954 filed February 12, 1913. The airconduit is forked on its inner end and the branches 36 and 37 thereof feed air to the inlet valves 38 of which two are provided for each branch, all working in parallel."

Air is discharged from the low pressure cylinder by valves 39, also working in parallel, into the cooling coil 40 that surrounds the upper end of the cylinder and a part of the high pressure cylinder. The valves 38 and 39 are contained in casings that are formed integral with the cylinder wall and are separated from each other to facilitate cooling. The cooling coil comprises an inner and an outer set-of turns that are connected in series. The upper turn of the outer set is connected to the head 41 of the high pressure cylinder and is admitted to said cylinder by suitable valve means. It is discharged after compression and under valve control into the pipe 42,that extends between the cylinders and the coil 40 and connects with a cooling coil 43 which surrounds the low pressure cylinder. The lower end of this coil is united by a coupling with an outlet conduit 44 located in the ring 28. The inletconduit 35 for the air to be compressed also passes through the ring so that all of the conduits are in substantially the same region. down and assembling of the apparatus as will appear later. By extending the pipe 4.2v inside of the cooling coil 40 and between it and the cylinders, I am able to reduce the outside diameter of the apparatus. Further since the pipe 42 is of smaller size than the coil 40 it can be more easily bent to the desired shape.

Surrounding the cylinders and the cooling coils is a dome shaped cover 45 which is shouldered to fit the ring 28. The joint between these arts should be water tight. At the top oi the cover is a flanged conduit 46 for conveying cooling water to the interior of the cover sothat all of the parts This facilitates the taking' are submerged and therefore subject to the cooling action. \Vater escapes by the conduit 47 which purposely extends downwardly at 48 forming a siphon to enable the water to be siphoned out of thelower part of the cooling chamber before taking otf the cover. In the cover are one or more small rubber diaphragms 49 which while plenty strong enough to withstand the water,

pressure will be blown out if by chance one of the cooling coils ruptures. \Vithout some suchdevice there would be danger of the whole cover being disrupted unless made unduly heavy because the pressure in the high pressure cooling coil is often as high as 1000 pounds per square inch. The high pressure air leaving by the conduit 44 asses through a safety valve 50, Fig. 1, of suitable construction carried by a fitting attached to the ring 28. From'the fitting are pipes 51 extending to the fuel injectors of the engine.

It will be seen by breaking the joint of conduit 46 and draining off the cooling water that the cover can be removed exposing-the coils' and also the screw .threaded plugs over the various valves, said valves being arranged on a smaller diameter than the inner series of coils. As before stated all of the air inlet and discharge conduits are arranged in the ring 28 so that they do .not have to be disturbed in order to get at the interior parts. Since the cylinders and valve casings as well as the cooling coils,

are all exposed to the action of the cooling water I am able to get the maximum cooling effect with an apparatus of moderate size. All of the parts are simple in construction and of a character not liable to get out of order.

patent statutes, I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but

In accordance with the provisions of the' I desire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

W hat I claim as new and desire to secure by Letters Patent of the United States, is

1. In an apparatus of the character de scribed. the combination of a base containing a receiver, a removable cylinder located therein which forms a wall of the receiver and has ports communicating therewith, valve means controlling the ports, heads for the cylinder that are supported by the base, one of which holds said cylinder in place, a piston in the cylinder, a member carried by the piston which is guided by one of the heads, a driving shaft, and connect-ions between the shaft and the valve means and pisnose-as? a receiver having internal shoulders, a

removable cylinder that rests on one of the shoulders, a h'eadthat rests on the other and,

supports a tubular guide, a second head that rests on the base and holds the cylinder in place, a piston in the cylinder, a member can riedtherelty which moves in the guide and is attached to the piston, a driving shaft, and a connection between the shaft and piston.

3.11s an apparatus of the character described, the combinaticn of a base having shoulders, a cylinder that is supported by one of the shoulders, a head therefor which is supported byanothcr shoulder, a guide that is carried by the head, a piston, a member moving with the piston and engaging the guide, a second head for the cylinder that carries a second cylinder, 2. piston for the second cylinder that is connected to the first and-inaddition to acting as such forms a guide for the first piston, a driving shaft, and a connecting rod means between the shaft and the pistons.

a. In an apparatus of the'character described, the combination of a base containing a receiver, a cylinder therein which forms a wall of the receiver, ports in the cylinder, a

valve that controls the admission of fluid to the cylinder and its passage therefrom to the receiver, means for actuating the valve, a piston in 'the cylinder, guides on opposite sidesof the piston, heads for the cylinder that are directly supported by'the base and also receive and direct the movements of the guides, a main shaft, a connection between the piston-and the shaft, and means actuated by the shaft for moving the valve,

-5. In an apparatus ofthe character described, the combination of a base, a ring supported thereby, a cylinder supported by the ring, conduits for conducting fluid to and from the cylinder that pass through the ring, a cover closes the cylinder, a pistonin the cylinder,

a driving shaft, and connecting means hetween the piston andfshatt.

6. In an apparatus of the character described, the combination of a base a ring supported thereb ,a cylinder, a head carried by the ring whic supports the cylinder and forms one wall 05a cooling chamber, conduits for conducting fluid to and from the cylinder that pass through the ring, a cover supported by the ring that covers the cylingler and forms with the ring and head a chamber which is adapted to contain a cooling fluid, a piston for the cylinder, is driving shaft, and means connecting the shaft iston. 1

, 7. u an apparatus of the character described, the combination ofa base, a ring supported thereby, a cylinder that is supported by the riu a cooling coil that surrounds the cylin er, a conduit conveying the cylinders,

that rests on the ring and in fluid to the cylinder that passes throughthe ring, a conduit-connectedto the coil that also passes through the ring, a cover that surrounds the cylinder and coil and rests on the ring, a piston in the cylinder, a shaft, and a connection between the shait and the piston.

8. In an apparatus of the character described, the combination of a. base, a. ring supported thereby, cylinders arranged in tandem relation which are supported by the ring, a conduit that passes through the ring for admitting fluid to one of the cylinders, a cooling coil that is connected to and: surrounds said cylinder and conveys fluid therefrom to, the otherficylinder, a. second cooling coil that is connected to the second cylinder and conveys fluid, therefrom, a conduit that passes through tlierring and is connected to the second coil, a cover for the cylinder and coils, pistons for the cylinders, a shaft, and means for uniting the pistons and shaft.

9. In an apparatus of the character described, the combination of a base, a ring ted thereby, low and high pressure in tandem relation, a head for supporting the cylinders which is carried by the ring and forms a Wall of 'a cooling chamber, cooling coils that convey fluid from the low to the high pressure cylsuppor cy lnders arranged inder and also convey it from the high presa closes the cylinders and coils and codperates with the ring and head to form a liquid con taining chamber, conduits for conveying liquid to and from the chamber, pistons for a shaft, and means for uniting the shaft and pistons. 4 10. In an apparatus of the character described, the combination of a base, cylinders arranged in tandem-relation which are supported thereby, a cooling coil for conveying fluid from one cylinder to the other which comprises inner and outer sets of turns that surround the cylinders, a second cooling coil that is connected to the high pressure cyl-' inder and surrounds the low pressure cylinder, a conduit connecting it with its cylinder which passes through the low pressure cooling coil, an inclosure for the cylinders and coils means conveying liquid to and from the inclosure, pistons for the cylinders,

a shaft, and means connecting the shaft and pistons.

. 11.;In an apparatus of the character described, the combination of a base, a ring -mounted thereon, a cylinder, a head supported by the lower part of the. ring which carries the cylinder, a cover that covers the cylinder and rests on the ring, said cover and ring forming a chamber to contain liquid, conduit in the cover admitting liduid, and a'eonduit in on siphon that is carried by the ring for removing liquid from the chamber and ring.

12. In an apparatus of the character de scribed, the 'combinatio n of a base, a pump cylinder mounted therein, a ring that rests on the base, a head for the cylinder and low and high pressure cylinders thatare formed integral with thering, pistons for the cylinders, a shaft, and means connecting the shaft and pistons.

13. In combination, a removable scavenging pump cylinder, low and high pressure cylinders, all of said cylinders being arunites the shaft ranged in axial alinement, a base, a means that holds the scavenging pump cylinder in place and also supports the low and high pressure cylinders, pi1Jns'for all of said cylinders that are mechanicallyunited, a shaft, and a connecting rod, means that and all of said pistons. In Witness whereof, I have hereunto set my hand this 18 day of Feby. 1918.

\VM. EVERETT VER PLANCK. Vitnesses DORMAN WEAVER, ETHEL M. SULLIVAN. 

